Hydraulic Stability of Geotextile Sand Containers for Coastal Structures – Effect of Deformations and Stability Formulae

Recio, Juan Luis; Oumeraci, Hocine

doi:10.1142/9789814277426_0315

Cited by 10 publications

(19 citation statements)

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“…However, there are many advantages to these systems of which the cost-effectiveness and the environmental-friendliness are possibly the most relevant ones working in support of the growing of interest and acceptance of the use of sand-filled geosystems for coastal protection also in higher wave energy coasts and as permanent structures. The research carried out at the Leichtweiβ Institute in Germany (see, e.g., Oumeraci and Recio, 2009;Recio, 2007;Recio and Oumeraci, 2007a, 2007b, 2007cOumeraci et al, 2002;Dassanayake, 2013) and at DELTARES in The Netherlands (see, e.g., van Steeg and Vastenburg, 2010; van Steeg and Breteler, 2008) has provided valuable improvements to the knowledge available on the stability of geotextile encapsulated-sand systems under wave loading. A recent research by das Neves (2011) gives further contribution to that knowledge, with emphasis on scour development and more widespread beach lowering.…”

Section: Wave-geosystems Interactionmentioning

confidence: 99%

Performance of submerged nearshore sand-filled geosystems for coastal protection

Neves

Moreira

Taveira-Pinto

et al. 2015

Coastal Engineering

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Section: Wave-geosystems Interactionmentioning

confidence: 99%

Performance of submerged nearshore sand-filled geosystems for coastal protection

Neves

Moreira

Taveira-Pinto

et al. 2015

Coastal Engineering

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“…Present knowledge related to the stability of GSC structures ( [4], [7], and [11]), was reviewed and hydraulic processes affecting the stability of GSC structure( [14] and [15])failure mechanisms of GSCs ( [16] and [17])and available stability formula -Oumeraci et al, [12] and Recio, [13] -were studied. Geotextile material, fill ratio and inclination of GSC placement were identified as key influencing parameters on the hydraulic stability of GSC.…”

Section: Methodsmentioning

confidence: 99%

“…Hence many number of applications of GSCs in Germany, Australia, (Saathoff et al [1], Restall et al [2]Heerten et al [3]), New Zealand (Jose et al [4]), United States (Fowler & Trainer, [5]), Dubai (Weerakoon et al [6]), Portugal (das Nevas et al [7]), Korea (Shin & Oh [8], Kim et al [9]), Sri Lanka (NAUE [10]) and also in many other parts of the world could be seen during the past few decades.Much research work (Venis [11], Oumeraci et al [12], Recio [13], Mori [14] and Dassanayake & Oumeraci [15]) has been carried out in order to understand the hydraulic processes related to stability of GSCs. However, several factors related to the hydraulic stability of GSC structures have to be studied for better understanding of the processes.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic Stability of Submerged GSC structures

2012

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Abstract:Geotextile Sand Containers (GSCs) are used for the construction of coastal structures as a low cost and softer alternative to expensive and hard structures made of concrete or rubble. However, the hydraulic stability of GSC-structures still needs to be investigated for a better understanding of the processes and the parameters of GSCs, which cause the failure. This study focused on the effect of the geotextile material, the sand fill ratio, and the inclination in GSC placement towards the hydraulic stability of submerged GSC structures. Four sets of specifically designed laboratory model experiments were carried out to study the influence of aforementioned parameters on the GSC stability. A new failure mode of GSCs was identified through the model experiments and named as "uplift and drift". From the test results (wave and damage analysis), new stability curves were developed and compared with each test scenario. The influencing parameters were quantified and the relative importance of each parameter for the hydraulic stability of submerged GSC structures was assessed. Finally, it was concluded that the sand fill ratio is the key influencing parameter among all considered parameters. For the tested sand fill ratios, the hydraulic stability increases, when the sand fill ratio increases. Furthermore, it was concluded that the stability of inclined GSCs is higher than horizontally placed GSCs. However, stability decrement was concluded for GSC made from the woven geotextile material comparative to the nonwoven GSCs. Hence, the type of the geotextile material and the inclination of GSC placement were found to be two important aspects that need to be considered, when designing GSC-structures.

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“…Semi-empirical hydraulic stability formulas for GSC structures were developed in the early 2000 based on flume experiments (Oumeraci et al, 2003), following the earlier hydraulic stability formulas of Hudson (1956) and Wouters (1998) for non-deformable structures. Later, based on similar experimental studies, these formulations were updated to be applicable to deformable structures (e.g., Recio and Oumeraci 2007;Oumeraci 2008, 2009;Dassanyake and Oumeraci 2012).…”

Section: Mitigating Erosion On Natural Barrier Islands Using Gscsmentioning

confidence: 99%

“…As a result, steeper structural slopes are found to be more stable due to an increased contact area between the GSC layers. Numerical simulations for a large number of structural configurations has led to semi-empirical formulas for 2 failure modes (Recio and Oumeraci, 2008). A summary of stability equations from the literature is given in Table 3.…”

Section: Mitigating Erosion On Natural Barrier Islands Using Gscsmentioning

confidence: 99%

Land Use and Mitigation Effects on Barrier Beach Erosion in Storms: Case Study in Rhode Island

Naser¹,

Grilli²,

Grilli³

et al. 2018

Int. Conf. Coastal. Eng.

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Sea Level Rise (SLR) and storm intensification lead to re-evaluating inundation assessments along the North Atlantic US shoreline. A particular effort is devoted to assessing coastal community risk to â€œ100-year stormâ€ events in Rhode Island, US, using a chain of state-of-the-art storm surge, wave propagation, and coastal erosion 2D models. Damage risks imposed on infrastructures and services incited US federal and state agencies to come up with innovative engineering solutions to improve coastal resiliency while preserving natural coastal and marine environments. This study critically evaluates available design tools used to assess the performance of two types of Natural and Natural Based Features (NNBFs) for coastal protection: natural vegetated barrier islands and dunes reinforced with Geotextile Sand-filled Containers (GSCs), on urbanized barrier islands. Comparative analyses with field data identifies the capabilities and limitations of phase averaging and phase resolving hydro-morphodynamic models used for simulating bed level changes in dissipative beaches, during 3 Sallenger storm regimes. Recommendations are provided on modeling approaches for simulating effects of vegetation and using GSCs to limit coastal erosion.

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Hydraulic Stability of Geotextile Sand Containers for Coastal Structures – Effect of Deformations and Stability Formulae

Cited by 10 publications

References 0 publications

Performance of submerged nearshore sand-filled geosystems for coastal protection

Performance of submerged nearshore sand-filled geosystems for coastal protection

Hydraulic Stability of Submerged GSC structures

Land Use and Mitigation Effects on Barrier Beach Erosion in Storms: Case Study in Rhode Island

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